When comparing Twine vs Google Sheets, the Slant community recommends Twine for most people. In the question“What are the best tools for video game design?”Twine is ranked 3rd while Google Sheets is ranked 4th. The most important reason people chose Twine is:

The basics are very easy to grasp, and you can have a basic story up in minutes.

Pros

Pro

Easy to understand

The basics are very easy to grasp, and you can have a basic story up in minutes.

Pro

Free for commercial projects

Twine is based on a GPL licence. You are free to download, modify and publish derivatives - even commercially.

Pro

Scalable, customized organization

Infinite row/columns and all the separate tabs to play with. Trips can be organized with as many attributes and calculations as you see fit.

Pro

Good for budgeting

Since it is a spreadsheet, very easy to calculate budget, and any secondary calculations as well (e.g. cost/day, cost/location, etc.)

Pro

Easy to share

Google Sheets are always accessible on the cloud, and easy to control permissions to share with relevant parties.

Pro

Easy to export

Physically (printing) and otherwise (converting to excel, attaching to emails).

Pro

Cross-platform

Can be accessed from any device via the browser, or Google's iOS and Android apps.

Cons

Con

Limited to interactive fiction

Twine is specialized to decision-based interactive fiction. Under the hood, a Twine game is just a flowchart for page transitions; the only way to add more complex behavior is to code it from scratch in JavaScript.

Con

Not optimized for travel

Unlike travel-specific websites, Sheets won't be able to tell if one link is a flight, and another is a hotel reservation, nor will it be able to know which cells correspond to what leg of the trip.

Con

Zero foundation

While there are sample layouts (see Travel planner), it's likely that each person's trip planning needs will be unique enough that it's better to start from scratch. Of course, once you use Sheets for one trip, it'll be easier and faster to set it up for future trips.